Holes were cut into the hulls to sink the vessels and they were then filled with sediment, mostly mud, to weigh them down and secure them.
While the acoustic deterrent costs £50m, the wider fish‑protection system - including larger inlet heads and a return pipe for fish - will bring the cost to £700m.
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Раскрыты подробности о договорных матчах в российском футболе18:01